As much as people can understand why an organization needs to change, it can often be difficult for them to see beyond any personal implications. Understandably, staff may be more concerned with how they are going to pay their mortgage if their job is at risk.
With any large scale change, the first concern many people have is that their job is at risk. If roles are not at risk, the sooner this can be communicated, the quicker any rumors can be dispelled. However, large transformation do often mean job losses. Again, if these can be communicated, the quicker people can begin to make preparations. Information and knowledge are again key. Let people know the support they will be given.
It is often local managers who can play a key role in helping people understand the personal implications of change. If staff participate in defining new ways of working, the more quickly they will accept and adapt to change. Local managers are also the people that staff will generally go to with concerns.